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प्रश्न
What is meant by a package?
What is a package?
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उत्तर
- A package in Java is a mechanism for organising Java classes into namespaces similar to the modules of Modula. Java packages allow classes in the same package to access each other’s package-access members.
- Example: The built-in functions Math.sqrt(), Math.pow() can be used directly in our programs by importing the built-in package java.lang.
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संबंधित प्रश्न
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Name the operators listed below are
(i) <
(ii) + +
(iii) &&
(iv) ? :
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Using switch statement, write a menu-driven program for the following :
(i) To find and display the sum of the series given below :
S = x1 -x2 + x2 – x4 + x5 – x20
(where x = 2)
(ii) To display the following series :
1 11 111 1111 11111
For an incorrect option, an appropriate error message should be displayed.
Rewrite the following using ternary operator:
if (x%2 == o)
System.out.print(“EVEN”);
else
System.out.print(“ODD”);
Write a Java expression for the following :
`sqrt(3"x"+"x"^2)/"a+b"`
Write a program in Java to accept a string in lower case and change the first letter of every word to upper case. Display the new string.
Sample input: we are in a cyber world
Sample output: We Are In Cyber World
Name the primitive data type in Java that is :
A single 16-bit Unicode character whose default value is ‘\u0000’.
Write the Java expression for (a + b)x.
